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You Selected (237): Oval Shape 20x15 mm Gems Clear All
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ID: 4479651 pcs
thumb image of 11.6ct Oval Cabochon Multicolor Pietersite (ID: 447965)
11.58 ct Pietersite
20.2 x 15.2 mm
$ 34.74
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ID: 4454151 pcs
thumb image of 20.8ct Oval Facet Violet-Blue Color-Change Fluorite (ID: 445415)
20.76 ct Color-Change Fluorite
20.1 x 15.2 mm
$ 520.66
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ID: 4454181 pcs
thumb image of 20.6ct Oval Facet Violet-Blue Color-Change Fluorite (ID: 445418)
20.55 ct Color-Change Fluorite
20.1 x 15.1 mm
$ 515.39
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ID: 4172861 pcs
thumb image of 15.3ct Oval Checkerboard (double sided) Lemon Quartz (ID: 417286)
15.32 ct Quartz
20.1 x 15.1 mm
$ 30.64
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ID: 4479681 pcs
thumb image of 11.7ct Oval Cabochon Multicolor Pietersite (ID: 447968)
11.71 ct Pietersite
20.1 x 15 mm
$ 35.13
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ID: 4172921 pcs
thumb image of 15.7ct Oval Checkerboard (double sided) Lemon Quartz (ID: 417292)
15.69 ct Quartz
20.1 x 15.2 mm
$ 31.38
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ID: 3708351 pcs
thumb image of 12.2ct Oval Cabochon Multicolor Jasper (ID: 370835)
12.24 ct Jasper
19.9 x 15.1 mm
$ 12.24
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ID: 4138151 pcs
thumb image of 22.2ct Oval Facet Violet-Blue Color-Change Fluorite (ID: 413815)
22.19 ct Color-Change Fluorite
20 x 15.1 mm
$ 443.80
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ID: 3596041 pcs
thumb image of 16.5ct Oval Cabochon Mocha Moonstone (ID: 359604)
16.52 ct Moonstone
20.1 x 15.1 mm
$ 33.04
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ID: 4455911 pcs
thumb image of 21.5ct Oval Facet Violet-Blue Color-Change Fluorite (ID: 445591)
21.46 ct Color-Change Fluorite
20 x 15.1 mm
$ 538.22
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ID: 4479511 pcs
thumb image of 14ct Oval Cabochon Multicolor Pietersite (ID: 447951)
14.04 ct Pietersite
19.8 x 15 mm
$ 42.12
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ID: 4169451 pcs
thumb image of 15.8ct Oval Checkerboard (double sided) Brown Smoky Quartz (ID: 416945)
15.80 ct Smoky Quartz
19.9 x 15 mm
$ 23.70
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ID: 3711041 pcs
thumb image of 13.5ct Oval Cabochon Multicolor Jasper (ID: 371104)
13.45 ct Jasper
20 x 15.1 mm
$ 13.45
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ID: 3707511 pcs
thumb image of 13.6ct Oval Cabochon Multicolor Jasper (ID: 370751)
13.58 ct Jasper
19.8 x 14.9 mm
$ 13.58
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ID: 1968371 pcs
thumb image of 23.6ct Oval Cabochon Multicolor Ruby-Zoisite (ID: 196837)
23.55 ct Ruby-Zoisite
19.9 x 15.1 mm
$ 70.65
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ID: 4059351 pcs
thumb image of 23.9ct Oval Cabochon Multicolor Tiger's Eye Matrix (ID: 405935)
23.92 ct Tiger's Eye Matrix
20 x 14.9 mm
$ 25.59
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ID: 4479641 pcs
thumb image of 11.3ct Oval Cabochon Multicolor Pietersite (ID: 447964)
11.33 ct Pietersite
19.9 x 15 mm
$ 33.99
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ID: 4059311 pcs
thumb image of 23ct Oval Cabochon Multicolor Tiger's Eye Matrix (ID: 405931)
23.02 ct Tiger's Eye Matrix
20.1 x 15.2 mm
$ 24.63
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ID: 4057991 pcs
thumb image of 22.7ct Oval Cabochon Multicolor Tiger's Eye Matrix (ID: 405799)
22.71 ct Tiger's Eye Matrix
19.9 x 15.1 mm
$ 24.30
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ID: 4059331 pcs
thumb image of 22.3ct Oval Cabochon Multicolor Tiger's Eye Matrix (ID: 405933)
22.34 ct Tiger's Eye Matrix
20.2 x 15.1 mm
$ 23.90
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ID: 4059321 pcs
thumb image of 22.2ct Oval Cabochon Multicolor Tiger's Eye Matrix (ID: 405932)
22.16 ct Tiger's Eye Matrix
20 x 15 mm
$ 23.71
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Oval Shape 20x15 mm Gems
Some people by gems by color or pricze, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated oval shapes, facet cut and cabochon gems available now in 20 x 15 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart